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%I #3 Mar 31 2012 12:35:08
%S 1,1,1,3,3,7,15,43,83,271,633,3283,9541,54293,204827,1408893,6437305,
%T 54681853,303651861,3282191633,22628378377,297350762879,2544553561975,
%U 41024771076465,431789004830701,8608866149320377,111456693040140865
%N Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 3X3 el 1,1 1,2 1,3 2,3 3,3 in any orientation.
%e Maximal 8 X 8 example
%e .0.0.1.0.0.1.1.1
%e .0.0.1.0.1.0.0.1
%e .1.1.1.0.1.0.0.1
%e .0.0.0.0.1.1.1.0
%e .0.1.1.1.0.0.0.0
%e .1.0.0.1.0.1.1.1
%e .1.0.0.1.0.1.0.0
%e .1.1.1.0.0.1.0.0
%K nonn
%O 1,4
%A _R. H. Hardin_, Oct 26 2008
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